Seedance 2.5

ByteDance's video-generation flagship: 30-second native-4K single-run generation ("one-take creation") with multi-turn extension, up to 50 multimodal reference inputs (vs 12 in Seedance 2.0), and audio co-generated in the same latent space. Live in Jimeng and Doubao Pro at launch; Ark API "soon". Closed weights, no technical report yet (slipped ~2 weeks from the expected mid-July date).